Bran-dresser



C. DE HAVEN.

(ModeL) BEAN DRESSER.

Patented Dem-13,1881.

.| VENTOR I ATTORNEYS WITNESSES UNITED STATES PATENT OFFICE.

CHARLES DE HAVEN, OF DENISON, TEXAS.

BRAN-DRESSER.

SPECIFICATION forming part of Letters Patent No. 250,791, dated December 13, 1881.

' Application filed May 26, 1881. (ModeL) T 0 all whom it may concern:

Be it known'that I, CHARLES DE HAVEN, a citizen of the United States, resident of Denison, in the county of Grayson and State of Texas, have invented a new and valuable Improvement in Bran-Dressers; and Ido hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of ref erence marked thereon.

Figure 1 of the drawings is a vertical crosssection of my invention. Fig. 2 is a longitudinal section, and Figs. 3 and 4 are detail views. I

This invention has relation to bran-dusters and flour cleaners or dressers; and it consists in the construction and novel arrangement of parts, substantially as hereinafter set forth.

In the accompanying drawings, the letter A designates the frame-work of a machine of this character, having in its lower portion a worm or other conveyer, B, for effecting the discharge of the cleaned material, the coarser and lighter particles being designed to pass off through an end discharge, 0.

D represents ribs which support the wiregauze screen E, which is usually arranged in the form of a partial cylinder, as shown in the drawings, its upper edges being secured to longitudinal hearings to of the frame.

F indicates the cylinder or body of the rubber. This cylinder is journaled in bearings 12 at the ends of the frame or support, and its shaft 0 is provided with a pulley, d, for the application of power to effect its rotation in the wire-gauze screen, with which it is designed to be concentric.

To the cylinder or body F are secured the flexible rubbers e, which are preferably made of rawhide or undressed leather, but may be made of other suitable material. In the construction illustrated the rubbers are represented as narrow strips of such material, extending each for a short distance in the direction of the circumference of the cylinder, and followed by a similar strip in the same direction until the straps complete the circuit of the cylinder. Next to this circular series of straps or rubbers is arranged another circular series on the cylinder, and soon, the straps being preferably arranged to break joints until the entirecylindrical surfacciscovered. In securing these rubbers to the cylinder, they are fastened each by one end, a screw, 9, or other suitable fastening,being employed for the purpose, and under each strap or rubber-is arranged, usually, a spring, 8, which is designed to give an elastic outward pressure to the strap.

It will be observed that the free ends of the straps all extend in the same direction around the cylinder, so that there will be no catching or clogging in their action in relation to the gauze, the conveyer-straps, or the material operated upon.

Grindicates the strap-rack, by means of which it is proposed to move the lighter material toward the discharging end of the case. This rack or conveyor is composed of a number of parallel straps, t, arranged in arc form over the rubber-cylinder. These straps tare flat in cross-section usually, and are pivoted each at one end to a bar, D, of the frame, and at the other to an adjustable hearing or bar, E, the latter being movable endwise by means of screw-bolts 'w and thumb-nuts c, or other suitable means. The adjustmentof the bearing E en ables the operator to vary the angle at which the conveyer-straps tcross the rubber cylinder, and thereby to control the rapidity with which the lighter or coarser particles move when actuated by the flexible rubbers of the cylinder, in connection with said conveyer-straps, forming the rack against and through which said rubbers press the light stuii" during the rotation of the cylinder.

Having described this invention, What I claim, and desire to secure by Letters Patent, 1s-

In combination with-the rubbing-cylinder, the parallel straps t, arranged in arc form over the cylinder, the bar D, the adjustable bean ingE, and screw-bolts w, provided with thumbnuts 22, as set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

CHARLES DE HAVEN. Witnessesi WILLIAM B. Boss, RICHARD COOKE. 

